The efficiency and output capacity of a low pressure distilling plant will be reduced if the last effect shell （）
1、Examine the query and its output execu
Examine the query and its output executed In an RDBMS Instance:Which three statements are true about the users (other than sys) in the output?...
2、The efficiency of a flash type evapora
The efficiency of a flash type evaporator can be increased by（）Alowering brine discharge densityBdecreasing the absolute pressure of each stageCincreasing the saltwater feed heater temperatureDincreasing the pressure at the spray pipe
3、The mechanical efficiency of an engine
The mechanical efficiency of an engine is always less than 100% （） losses occurring in the form friction.AbecauseBsinceCdue toDowing to
4、The minimum number and capacity of bil
The minimum number and capacity of bilge pumps and fire pumps and their distributing within the ship is governed by （）.AClassification Society RulesBNational requirementsCThe IMO International Convention for the Safety of Life at SeaDAll of the above
5、What happens to the efficiency of an a
What happens to the efficiency of an anchor when it is moved from sand to mud?（）AThe efficiency increasesBThe efficiency decreasesCThe efficiency remains the sameDThe efficiency cannot be determined.
6、The mechanical efficiency of an engine
The mechanical efficiency of an engine （） because losses occur in the form of friction.Ais always less than 100%Bis always more than 100%Cis always equal to 90%Dis always less than 90%